Can you find out the missing number in the grid?

Dwayne Johnson was running away with the loot from a heist in his car along with Vin Diesel. One tire was punctured and he dropped down to replace it. While changing the wheel, he dropped the four nuts that were holding the wheel and they fell into a drain. Vin Diesel gave him an idea using which they were able to drive till the rendezvous point.

What was the idea ?

It is raining today at 11:59 am. What is the probability of sunny weather after 72 hours?

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

You are given a cube that is made with the help of 10x10x10 smaller cubes summing up to a total of 1000 smaller cubes. You are asked to take off one layer of the cubes.
How many remain now?

A bag contains 64 balls of eight different colours. There are eight of each colour (including red). What is the least number you would have to pick, without looking, to be sure of selecting 3 red balls?

A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

Can it be possible to build a house that has all its four walls facing towards the South?

Suppose that you are trapped on the surface of a frozen lake. The surface is so smooth and ideal that there is no friction at all. You cant make any grip on the ice and no wind is blowing to help you out. You have just a mobile phone with you which has got no reception disabling you to call for help.

How will you plan your escape before you freeze to death on the frozen lake?